# -*- coding: utf-8 -*-
#  @author  Bink
#  @date  2020/9/2 19:07
# @Email : 2641032316@qq.com

import pandas as pd
import numpy as np

df1 = pd.DataFrame(np.arange(12).reshape(6, 2))
df2 = pd.DataFrame(np.arange(12).reshape(3, 4))
print(df1)
print(df2)
print(df1.merge(df2, how='left'))


